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Shrimp, Troglocubanus Jamaicensis, Still Known Only STUDIES ON THE FAUNA OF CURAÇAO AND OTHER CARIBBEAN ISLANDS: No. 183 Therediscoveryof the freshwater shrimp Macrobrachium crenulatum in Jamaica by Waine Hunte (Zoology Dept., University of the West Indies, Mona, Kingston 7, Jamaica) A record of the freshwater shrimps of Jamaica has been provided by Hart (1961b). His study includes taxonomical comments and the which the notes on locations at various species were caught. Since then Holthuis (1963a) has described a new subterranean freshwater shrimp, Troglocubanus jamaicensis, still known only from its typelocality near Goshen, Jamaica, and Chace & Hobbs (1969) have listed all the freshwater shrimps recorded in Jamaica that time. Hunte up to Subsequently, (1975) reported the presence of Atya lanipes Holthuis in Jamaica for the first time. Macrobrachium crenulatum Holthuis (1950a) has not been re- ported from Jamaica since 1910, and both Hart (1961b) and it in Choudhury (1971a) considered no longer extant the island. Extensive collecting during the present study has produced a single male of this with specimen species post-orbital carapace length 12.9 The of the is the faunal mm. purpose present paper to update record of Jamaican freshwater shrimps by confirming the disputed of M. crenulatum in the There therefore four- presence island. are in teen species of freshwater shrimps now considered extant Jamai- ca, and these are listed in the following Table. Hunte (in press) has discussed the ecological factors affecting the distribution of the more common of these shrimps throughout Jamaica. I would like to thank Mr. R. MAHON of the Zoology Department, University of the Guelph, for assistance in field. The financial support of a postgraduate scholar- ship from the University of the West Indies is gratefully acknowledged. 70 LIST OF THE JAMAICAN FRESHWATER SHRIMPS Name Type Locality Family ATYIDAE Atya innocous (Hcrbst), 1972 Martinique Atya lanipes Holthuis, 1963a St. Thomas, Virgin Islands Atya scabra (Leach), 1815 Mexico Jonga serrei (Bouvier), 1909 Havana, Cuba Micratya poeyi (Guerin-Meneville), 1855 Cuba Potimirim americana (Guerin-Mene- ville), 1855 Cuba Potimirim mexicana (De Saussure), 1857c Veracruz, Mexico Xiphocaris elongata (Guerin-Meneville) 1855 Havana, Cuba Family PALAEMONIDAE Macrobrachium acanthurus (Wiegmann), 1836 Coast of Brasil Macrobrachium carcinus (Linnaeus), 1758 Jamaica Macrobrachium crenulatum Holthuis, 1950a Rio Peje Bobo, Panama Macrobrachium faustinum (De Saussure), 1857c Near Jacmel, Haiti Macrobrachium heterochirus (Wiegmann), 1836 East coast of Mexico Troglocubanus jamaicensis Holthuis, 1963a Near Goshen, Jamaica 71 SYNONYMY Palaemonolfersii, SHARP, 1893 (part), p. 123. Bithynis olfersii, RATHBUN, 1901 (part), p. 124. Macrobrachium 315. olfersii, SCHMITT, 1933a (part), p. Macrobrachium crenulatum 95. HOLTHUIS, 1950a, p. GEOGRAPHICAL DISTRIBUTION Macrobrachium crenulatum has been recorded in Panama, Vene- and number the zuela, a of West Indian islands (Jamaica, Hispa- niola, Puerto Rico, St. Croix, Guadeloupe, Dominica, Grenada, Trinidad). HABITAT The present specimen was collected at an altitude of about 50 ft in a tributary of the Black River in the parish of St. Elizabeth, the the Jamaica The water in tributary was clear and fresh, and substratum of mud and was composed decaying vegetation. Current speed was extremely low. M. crenulatum had previously been caught in low altitude site in in Jamaica at a a slow-moving stream the parish of St. James (see HART, 1961b). The species is apparently much more common in Puerto Rico island it in than in Jamaica, and in the former occurs primarily quiet pools at altitudes below 1300 ft (CHASE & HOBBS, 1969). COLOUR IN LIFE The dark red and had red-black carapace was predominantly a the half. The of the area dorsolaterally in anterior terga first, sec- ond, third and fourth abdominalsomites were red-black; those of the The fifth and sixth were of a lighter red tinged with blue. third, fifth and sixth somites each had in their fourth, a yellow area pos- terior half; that of the third being the largest. The telson was bright 72 red with red-black and black spots surrounding the bases of the spines. The uropods were pale red with darker red and yellow pat- ches. The antennal and antennular peduncles were dark red, the tan. The of the the flagella were coxa pereiopods were grey; more distal podomeres usually pale red. The chela of the first pereiopod was cream-tan with a blue-black stripe; that of the second pereio- black with white The pod was tips. pleopods were pale red. MORPHOLOGICAL FEATURES OF TAXONOMIC SIGNIFICANCE The carapace was without a branchiostegal spine; but antennal The and hepatic spines were present. rostrum (Fig. 58a) possessed Figure 58. Macrobrachium crenulatum Holthuis. Morphological features of taxonom- ic significance. — A. Rostrum. — B. Major second pereiopod. 73 thirteen dorsal teeth and five ventral teeth, the most anterior of which small. The four dorsal behind was very posterior teeth were size the orbital margin. The second pereiopods were unequal in and form and had thick pubesence on the palms and opposing margins of The of fingers. carpus the major second pereiopod (Fig. 58b) was shorter than the and the about palm or merus, fingers were the same length as the palm. The palm was compressed and was not quite twice as long as wide. The spines along the mesial margin of the palm decrease in size did not near the middle portion of the palm but became base suddenly smaller near the of the fixed finger. BIBLIOGRAPHY BOUVIER, E. L., 1909. Les crevettes d'eau douce de la famille des atyides qui se trouvent dansl'ile de Cuba. Bull. Mus. Hist. Nat. Paris 15: 329-336. CHACE, F. A. & HOBBS, H., 1969. The freshwater and terrestrial decapod crusta- ceans of the West Indies with special reference to Dominica. Bull. U.S. Nat. Mus. 258 292, pp. CHOUDHURY, P. C., 1971. Complete larval developmentof the palaemonid shrimp, Macrobrachium carcinus (L.), reared in the laboratory (Decapoda, Palaemoni- dae). Crustaceana 20 (1): 51-69. GU£RIN-M£NEVILLE, F. E., 1855. Articulata. In RAM6N DE LA SAGRA, Historia natural A tlas de Pis. fisica politica y de la isla de Cuba, 8; Zoologla, 1—3. HART, C. W., 1961b. The freshwater shrimps (Atyidae and Palaemonidae) of Jamai- W. with of their relation to the of ca, I.; a discussion ancient geography the Western Caribbean Proc. Acad. Nat. Sci. area, Philadelphia 113 : 61-80. HERBST, J. F. W., 1792. Versuch einer Naturgeschichte der Krabben und Krebse nebst einer systematischen Beschreibung ihrer verschiedenen Arten, 2 (1791-1796), viii 225 pp. HOLTHUIS, L. B., 1950a. Preliminary descriptions of twelve new species of palaemo- nid prawns from American waters (Crustacea, Decapoda). Proc. Kon. Nederl. Akad. 93-99. Wetensch., 53: HOLTHUIS, L. B., 1963a. Two new species of freshwater shrimp (Crustacea, Decapo- da) from the West Indies. Proc. Kon. Nederl. Akad. Wetensch. 66 : 61-69. HUNTE, W., 1975. Atya lanipes Holthuis in Jamaica, including taxonomical notes the larval and a description of first stage (Decapoda, Atyidae). Crustaceana 28 (1): 66-72. HUNTE, W., 1978. The distribution of freshwater shrimps (Atyidae and Palaemoni- dae) in Jamaica. Zool. J. Lin. Soc. 64 (2): 135-150. LEACH, W., 1815. A tabular view of the external characters of four classes of ani- which Linne under with the distribution of the mals, arranged insecta; genera composing three of these classes into orders, etc. and descriptions of several new genera and species. Trans. Lin. Soc. London 11: 306-400. 74 tria secundum LINNAEUS, C., 1758. Systema naturae perregna naturae, classes, ordines, locis. Ed. Vol. genera, species, cum characteribus, differentiis, synonymis, 10, i, 824 pp. RATHBUN, M. J., 1902. The Brachyura and Macrura of Porto Rico. Bull. U.S. Fish. Comm., igoo (1902), 20 (2), 127 pp. SAUSSURE, H. DE., 1857C. Diagnoses de quelques crustaces nouveauxde 1'Amerique tropicale. Rev. Mag. Zool. (2) 9: 501-505 W. 1933a. of Macrobrachium found in the SCHMITT, L., Notes onshrimps the genus United States. Jour. Washington Acad. Sci. 23 (6): 312-317. SHARP, B., 1893. Catalogue of the crustaceans in the Museum of the Academy of Natural Sciences of Philadelphia. Proc. Acad. Nat. Sci. Philadelphia 1893: 104-127. A. F. des WIEGMANN, A., 1836. Beschreibung einiger neuen Crustaceen Berliner Museums aus Mexico und Brasilien. Arch. Naturgesch. 2 (1): 145-151..
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